Sectional steam-boiler



I(No Model.) 2 sheets-sheet 1.

A. M. DIMMIGKU E. Z. SMITH. SEGTIONA'L STEAM BOILBR.

No. 389,642. I Patented Sept. 18, 1888.

N4 PETERS. Phew-Lnhugnpner. wasmngm. mc.

(No Model.) 2 sheets-sheen 2.

'A. M. lnx-m1810888 E. z.. SMITH.

SBGTIONAL STEAM BOILEBH No. 889,842. .Pjnted' Sept. 18, 1888.

vsite ends ofthe setting, as shown.

UNITED STATES PATENT OFFICE.,

ALBERT MELLVILLE DIMMIOK AND ELMER Z. SMITH, OF IVILKES-BARR,

Y PENNSYLVANIA y SECTIONAL STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 389,642, dated September 18, 1888. A Application led February 23, i888. Serial No. 264.882. (No model.)

To all whom it may concern,.-

Be it known that we, ALBERT MELLVILLE DIMMI'OK and ELMER Z. SMITH, citizens of the United States, residing at Wilkes-Barr, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Improvement in Sectional Steam-Boilers, of which the fol'- lowing is a specication. Our inventionrelates tov au improvementin sectional safety steam-boilers; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and partieularlypointed ont in the claims.

In the accompanying drawings, Figure l is a vertical longitudinal sectional view of a seetional boiler embodying onr improvements. Fig. 2is a vertical transverse sectional view of the same. Fig. 3 is a front end elevation. Fig. 4 is a detail perspective view.

A represents the setting, which is made ol' brick-work and forms a support for the boiler and the sides of the combustioii-cliamber and aslrpitof the furnace. The sides of the fireboX or combustion-chamber are lined with lirebrick at B. The grate C of the cou1bustionchamber is composed of a series of revoluble parallel grate-bars, D, -eaeh of which is triangular in shape in cross-section, as shown.

E represents a pair of mnd-drums, which are incased in the sides of the brick-setting and extend longitudinally through the saine and have their ends projecting beyond oppo- The outer ends of the said mud-drums are provided with ange-heads F, which are bolted thereto, and are adapted to be removed therefrom at will to enable the mud and sediment to be cleaned from the drums when necessary. The rear ends of the mud-drums arc connected by a pipe, G.

H represents a series of inclined tubes, which have their lower ends screwed to the upper sides of the mud-drums. To the upper end of each pipe H is screwed a three-way union, I, and near the lower end ot' each pipe H is a T- coupling, K.

L represents a series of oppositely-inelined branch pipes, which have their ends connected by semicircular couplings M. The extreme upper end ot' the uppermost pipes L -is connected to the lower branch or arm of the npper union I, and the lower end of the lowermost pipe L is connected to the pipe H by the T-coupling K. Each pipe vH and its branch inclined pipes L constitutes a section of the boiler, and each of the said sections may be removed froni the boiler by simply unscrewing the lower end of the pipe H from the muddruin, with which it is engaged, and by unserewing pipes N, which connect the unions I with a steam-drum, O, that is arranged in a horizontal position at the upper side of the boiler, as shown in Figs. l and 2. The ends of the said steam-drum O have removable heads and project beyond the ends ot' the shell P, which ineases the said steam-drum v`and the section-pipes of the boiler, and has ils lower flanged edges resting` upon the walls of the brick-setting. i

One ofthe sections on one side ofthe boiler is omitted to leave an open space, through which extends a coal magazine and chute, R, that passes through an opening in one side of the shell P, is secured to the said shell, has its lower end arranged directly over the lire-box. and has its upper end provided with a hinged lid, S. This magazine is filled with coal when the boiler is in operation, and forms a selffeeder of fuel to the fire-box, as will be readily understood.

T represents a smoke pipe or llue, which communicates with and extends from thcrear side of the shell I).

U represents a metallic'plate, whichisseenred to the front end of the casing. The said plate has an opening, V, through which fuel may be placed upon the fire, and a hinged door, IV, for the said opening. In the lower side of the plate is anopening, X, which communicates with the ash-pit. This opening is covered by a hinged door, Y,which has a hinge draft-regulating door, Z, that is provided with an out- Wardly-extending arm, A.

B represents asafetyvalve, wh ich is attached to the front end of the steam-drum and has a lever, G', which is connected to the arm A of the draft-regulator by means of a rod, D.

In the smoke-pipe is a hinge weighted draft regulator or damper, E,which is connected to IOO the lever of the safety-valve by a flexible cord, F,thatpasses over suitable pulleys. By means of this construction the draft-regulator and the damper will be closed when the steampressure is so great as to raise the lever-arm of the safety-valve and thereby automatically regulate the draft.

By reference to Fig. 2 it will be understood that the pipes H are inclined toward each other, and that this arrangement of said pipes, together with the inclined position of the branch pipes L,whicl1 connect therewith, serve to maintain a constant circulation of water to all parts of the boiler.

A steam-boiler thus constructed is extremely cheap and simple, may be set up or taken to pieces by one man, is not liable to explode with such violence as to endanger life or destroy property, is very easily operated, and is capable of maintaining a maximum head of steam with a minimum consumption of fuel.

Changes in the form, proportion, and details of construction of the several parts may be made without departing from the spirit or sacrifieing the advantages of our invention.

Having thus described our invention, we claiml. In a sectional steam-boiler, the combination ofthe mnd-drum, the steam-drum O, the pipes H,communicating with said mnd-drums and steam-drums, and the branch pipes L, arranged at suitable angles supported over the lire box and communicating at their upper and lower extremities with pipes H, substantally as described.

2. In a sectional steam-boiler, the combination of the mud-drums, the steam-drums, and the sections connecting the same, the said sections comprising each a pipe, H, and the oppositcly-inelined branch pipes L, communieating with each other and communicating with the section-pipes near the upper and lower ends thereof, substantially as described.

3. The combination, in a sectional steamboiler, of the pipe H and the branch pipe L, having their opposite ends connected to and communicating with each other, and their extreme upper and lower ends communicating \vith the pipes H near the upper and lower ends thereof, substantially as described.

4. The combination of the mud-drums, the steam drum, the inclined pipes H, having their lower ends dctachabl y secured to the mud-dru ms, the three-way union I, detachably secured to the pipes H, the pipes N, connecting the upper branches of said unions I to the steam-drum, the couplings K, connected to pipes H near the lower ends thereof, and the communicating branch pipe L, connected to couplingsK and the lower branches of unions I, substantially as described.

5. In a sectional steam-boiler, the shell P, the steam-drum therein, the mud-drums, the section-pipes connecting the steam and mud drums, and the magazine chute extending through the shell, passing down between the pipes, and having its lower end arranged over the lire-box, substantially as described.

6. In a sectional steam-boiler, the combination of the mud-drums, the steam-drum, the section-pipes H, extending up from the muddrums and having the coupling K near their lower ends and the unions I at their upper ends, the pipes N, attached to the steam-drum and to the unions I, and the opposite inclined branch pipes L, connected together by couplings M, and connected to the section-pipes by couplings K and unions I, substantially as described.

7. In a sectional steam -boiler, the muddrums E, the steam-drum O, and the sections connecting the same, said sections each comprising a pipe, H, and the oppositely-inelined branch pipes L, communicating with each other and with the pipes H, said branch pipes being connected together by couplings M and connected to the pipes H by coupling K and union I, as set forth.

8. In a sectional steam boiler, the muddrums E, the steam-drum O, and the boiler proper made in sections, each comprising a pipe, H, and inclined branch pipes L, the lower end of the pipe H being detachably sccured to the drums E, and the upper ends being detachably connected to the steam-drums by means substantially as described, as set forth.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence oftwo witnesses.

ALBERT MELLVILLE llllllflllfllf. llliilllll Z. Sllll'lll.

\Vitnesses:

E. G. Sreenns, R. J. llLtRsHALL, J r. 

